§ 2.  Catechist.  The duty of catechizing was not limited to a class of persons permanently set apart for that purpose, but all orders of the Clergy were accustomed to take part in the work.  Even laymen were encouraged to teach children or new converts the first elements of religion, as we learn from Cyril’s exhortation:  “If thou hast a child according to the flesh, admonish him of this now; and if thou hast begotten one through catechizing, put him also on his guard Cat. xv. 18..”  That this remark was addressed not to the Catechumens, but to such of the Faithful as happened to be present among his audience, appears from what he says elsewhere, “So thou likewise, though not daring before thy Baptism to wrestle with the adversaries, yet after thou hast received the grace, and art henceforth confident in the armour of righteousness, must then do battle, and preach the Gospel, if thou wilt Cat. iii. 13..”